DHCP option problem

[52000cc]

How can I enable DHCP options for a single host? For example, I need to assign a different gateway to a specific host.

[52000cc]

I am currently using another device as a DHCP server because the Cisco equipment has been replaced. Below is an example where I assigned a different gateway for a specific host. If FortiGate can also achieve this, I can stop using that device as the DHCP server.

config host

option ip '192.168.10.xxx'

option mac 'xx:xx:xx:xx:xx:xx'

option dns '1'

option tag 'custom_gtwy'

config tag 'custom_gtwy'

list dhcp_option '3,192.168.10.1'

[Toshi_Esumi]

What gateway IP the other clients get in the same 192.168.10.0/24 subnet or broadcast domain? Is it like 192.168.10.2?
I don't think it's possible at least with FGT. I'm not sure how to do with Cisco either unless the sencond gateway is for the secondary IP of the same gateway device interface.

Toshi

[52000cc]

Yes, same vlan, like main is using 192.168.10.1, and the specific host will use 192.168.10.2.

[Toshi_Esumi]

With Cisco, or your current DHCP server, there seem to be a concept "nesting DHCP server/pool", or sub-pool under the main pool. So you can configure the same parameters like DNS, gateway, and so on in the sub-pool, which is for a host with a reserved IP.
I don't think FGT's DHCP server has the same concept.
You might need to keep the current DHCP server as is if the gateway arrangement can not be changed.

Toshi

[52000cc]

OK, thanks!